Understanding this exact keyword string requires breaking down the standard nomenclature used by digital preservation and release groups:

The string is the standardized release name for the North American retail version of Pokémon HeartGold ripped and distributed within the digital emulation scene. To understand this highly specific phrase, one must break down the conventions of the Nintendo DS "Scene" —a subculture where release groups competed to index, dump, and archive video game ROMs using rigorous naming templates.

If you are using DeSmuME and still experiencing crashes after applying the code, try these settings adjustments: